Solenoid Replacing Camshaft

8/8/2019 Solenoid Replacing Camshaft

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ABOUT THIS PROJECT

` In this project, we are going to replacecamshaft(entire set) in a diesel or petrol engine

with solenoid valves.

` There is no need of entire camshaft arrangement.

` The solenoids valves are operated instead of camshaft valves.



ADVANTAGES

Reduced space is enough

No separate cooling is required(ie:camshaft

requires cooling and occupies lots of space)Reduced vibration

More accuracy which increases overall efficiency

of the engine.

Less mechanical wear and tear

Reduction in engine weight



DRAWBACKS:

High initial cost



Explanation:

In this project we are going to replace the entire

camshaft arrangement with solenoid valves.



` View of camshaft rod arrangement.

` These rods are connected to the timing gear

which in turn is connected to the crankshaft.

` Due to wearing of mechanical parts, there will be

some delay in opening the intake and exhaustvalve.

` Also, valve clearance should be checked

periodically and adjusted if necessary.



` These solenoid valves are currently used in

electronic fuel injection system as shown in fig.



` Currently many types of solenoid valves are

present in the market today.

` For our project, we should go for higher speed(ie:

opening and closing time of solenoid should be

higher)solenoids.

`

The solenoid will be controlled by anECU(electronic control unit) which may be a 16-bit

or 32-bit microprocessor.

` The input to ECU will be from crankshaft sensors.



Physical location

The rotating disc of the sensor system does notnecessarily have to be mounted directly on thecrankshaft but can also be driven by a chain or toothed belt off the crankshaft as is the case insome Hondas where the crank position sensor islocated in the distributor, effectively driven by the

timing belt. Other locations include: The front of the crank on the engine block below or next to thewater pump, on the main crank pulley or near theflywheel.



` The Crankshaft position sensor also known as

the crank position sensor is an electronic device

used in an engine to record the rate at which thecrankshaft is spinning. This information is used by

the ECU to control ignition and fuel injection. The

sensor system consists of a rotating part, typically

a disc, as well as a static part, the actual sensor.Typically a Hall Effect sensor is used as the static

part requiring a magnet to be mounted

somewhere in the periphery of the rotating disc,

but other detection principles can also beemployed i.e. optical or inductive.



` Mercedes, BMW, Honda, etc«., are currently

using crankshaft sensors for controlling spark

timing in their petrol variants.` These sensors can withstand high temperature.



` AUTOC AR INDIA MAGAZINE

` WIKIPEDIA.ORG

` HOWSTUFFWORKS.COM

` SE ARCH ENGINE-GOOGLE.COM

Solenoid Replacing Camshaft

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